Sources said it is likely his measurements will be sent on to a top tailors in London

It also emerged yesterday that the newlyweds will not be going on honeymoon immediately and will be straight back to work. Meghan won’t have a Maid of Honour.

A spokesman for Kensington Palace said: “Ms Markle is delighted to have her parents by her side on this important and happy occasion. It’s very important to her that both her parents have roles in her wedding.”

Speculation had mounted for months over whether dad Thomas would attend on May 19.

But as The Sun revealed last month it was always his intention to be at his daughter’s side.

He has now been measured up for his Royal Wedding suit by his local tailor in Rosarito, Mexico. He spent 15 minutes inside the small backstreet wedding and tuxedo shop — a short drive from his ocean-side home.

“Thomas was just getting measured in preparation for his wedding suit. That store is the only one close to where he lives.” A spokesman for the Mexican tailors refused to comment. Prince Harry, 33, is still to meet his future father-in-law who US actress Meghan is said to “adore”.

They will get together for the first time in the days before the wedding. The source added: “Thomas cannot wait to fly to the UK to see Meghan and meet Prince Harry for the first time. He will be extremely nervous, but his family are backing him.

“Despite some of the squabbles in the family, he is the one who joins them all together. He still has the respect of virtually everyone.”

Thomas married yoga instructor Doria in 1979. They divorced in 1988 and he now lives alone.